Prenatal yoga DVD

I'm 6 weeks pregnant and am in relatively good shape. I don't exercise and could eat better but I'm working on it. I know I need to do something while pregnant so I can stay healthy and active. I'm considering prenatal yoga. I've never done yoga a day in my life so I don't know where to start. I had a miscarriage in November so that's a fear for me now too. Can anyone recommend a DVD that I could do at home, that moves slow as I am new to yoga? Something meant for prenatal? Thanks ladies! (Prenatal workout recommendations welcome as well, but I don't exercise now).